CONDENSED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenue
Product and service revenue	$ 5,932	$ 4,930
Lease	1,111	976
Total revenue	7,043	5,906
Cost of revenue (exclusive of amortization)
Total cost of revenue	3,149	2,338
Operating expenses
Selling, general and administrative expenses	6,035	4,779
Research and development expenses	2,746	1,571
Amortization of intangible assets	313	317
Operating loss	(5,200)	(3,099)
Other income (expense)
Interest expense		(604)
Other income, net	18	17
Net loss attributable to common stockholders	$ (5,182)	$ (3,686)
Net loss per share attributable to common stockholders
Basic and diluted	$ (0.56)	$ (3.44)
Weighted-average number of shares used in calculation of net loss per share:
Basic and diluted	9,187	1,070
Product
Revenue
Product and service revenue	$ 5,158	$ 4,103
Cost of revenue (exclusive of amortization)
Total cost of revenue	2,090	1,206
Service
Revenue
Product and service revenue	774	827
Cost of revenue (exclusive of amortization)
Total cost of revenue	808	716
Lease
Cost of revenue (exclusive of amortization)
Total cost of revenue	$ 251	$ 416